How do you convert Overworld coordinates to the Nether?
Divide X and Z by 8, round each result down, and keep Y unchanged. For example, Overworld (800, 64, −200) becomes Nether (100, 64, −25): 800 ÷ 8 = 100 and −200 ÷ 8 = −25. Y stays 64; it is not divided by 8.
Use the Nether to Overworld calculator for the return trip: multiply X and Z by 8. Nether (100, 64, −25) becomes Overworld (800, 64, −200). These are target coordinates for planning a portal; they do not guarantee where an existing portal will take you.
How are negative coordinates rounded?
This calculator uses floor, which rounds toward negative infinity. Overworld (−9, 64, −1) becomes Nether (−2, 64, −1): −9 ÷ 8 = −1.125 rounds down to −2, and −1 ÷ 8 = −0.125 rounds down to −1. Y remains 64.
The Java/Bedrock choice changes the command syntax, not this rounding rule.
Why can a portal lead to an unexpected entrance?
Converted coordinates are a planning target. Check nearby portals, entry height and portal shape when investigating unexpected arrivals. Record the actual entrances and test both directions in your world. Lighting both portals does not guarantee a one-to-one connection.
Does this teleport change dimension?
Yes. A plain coordinate-only /tp stays in your current dimension. The copied command uses execute in to select the destination dimension first. For the example above, run the command for your edition from player chat with commands enabled:
Java: /execute in minecraft:the_nether run tp @s 100 64 -25
Bedrock: /execute in nether run tp @s 100 64 -25
@s means you, the player running the command. For the return trip the calculator uses minecraft:overworld in Java or overworld in Bedrock. The command teleports you; it does not build or link a portal.
Which portal search rules apply?
Java 1.16.2+ reference: the horizontal search area extends 16 blocks each way along X and Z in the Nether, or 128 in the Overworld. Candidate distance also includes Y. These are search references, not a guarantee that an entered point will be chosen.
Use this as a Bedrock Nether portal calculator for coordinate conversion and Bedrock teleport commands. Routing has not been independently verified for this tool. Check recorded arrivals in your version and world; this page does not simulate portal selection.
Command references and limits
See the official Java execute-in command notes and Bedrock execute reference for dimension-changing command syntax. Older releases with legacy command syntax, custom dimensions, and server plugins may behave differently.
The calculator scales horizontal coordinates only. It does not inspect terrain, find a safe landing spot, or simulate nearby portals. Choose a safe Y and check the destination in your world.
